Power adapter



FIG. 1 is a front end, one side and top perspective view of a power adapter showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a one side elevational view thereof;

FIG. 5 is an opposite side elevational view thereof;

FIG. 6 is a front end elevational view thereof; and,

FIG. 7 is a rear end elevational view thereof. 

The ornamental design for a power adapter, as shown and described. 